Retractable sign



FIG. 1 is a top perspective view of a retractable sign showing our new design;

FIG. 2 is a top perspective view thereof, with the sign portion shown in open condition and with the broken line showing for illustrative purposes only and forming no part of the claimed design;

FIG. 3 is a right side elevational view thereof, with the center broken away for convenience of illustration;

FIG. 4 is a left side elevational view thereof; and,

FIG. 5 is an enlarged top plan view thereof, with the bottom being a mirror image. 

The ornamental design for a retractable sign, as shown and described. 